Passage Bio, Inc. (PASG) Ownership
PASG ownership summary
as of October 18, 2026- Institutions
- 46.4% of shares outstanding
- Insiders
- 7.71% of shares outstanding
- Shares outstanding
- 3.2M
- Float
- 3.2M shares available to trade
- Short interest
- 3.52% 91K shares short
- Days to cover
- 3.35 short interest down 6.4% vs prior month
- Institutions 46.43%
- Insiders 7.71%
- Other investors 45.86%
PASG top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Lynx1 Capital Management, LP | 20.94% | 674K | $2.4M | +50,055 (+8.0%) | June 30, 2026 |
| 2 | Vanguard Capital Management, LLC | 3.54% | 114K | $398,874 | — | June 30, 2026 |
| 3 | Balyasny Asset Management LLC | 3.33% | 107K | $374,588 | +107,025 (0.0%) | June 30, 2026 |
| 4 | Ikarian Capital, LLC | 3.09% | 100K | $348,310 | +31,393 (+46.1%) | June 30, 2026 |
| 5 | Yiheng Capital LLC | 2.68% | 86K | $301,340 | — | June 30, 2026 |
| 6 | Renaissance Technologies Corp | 1.49% | 48K | $167,622 | −85,720 (−64.2%) | June 30, 2026 |
| 7 | Erste Asset Management GmbH | 1.26% | 41K | $142,328 | −44,597 (−52.3%) | June 30, 2026 |
| 8 | Geode Capital Management, LLC | 1.15% | 37K | $129,591 | −4,354 (−10.5%) | June 30, 2026 |
| 9 | Verdad Advisers, LP | 0.95% | 31K | $107,548 | +8,600 (+38.9%) | June 30, 2026 |
| 10 | BOOTHBAY FUND MANAGEMENT, LLC | 0.88% | 28K | $99,536 | +9,568 (+50.7%) | June 30, 2026 |
| 11 | BlackRock Inc | 0.87% | 28K | $97,685 | −685 (−2.4%) | June 30, 2026 |
| 12 | Acadian Asset Management LLC | 0.70% | 22K | $78,736 | −1,700 (−7.0%) | June 30, 2026 |
| 13 | Vanguard Fiduciary Trust Co | 0.53% | 17K | $59,672 | — | June 30, 2026 |
| 14 | Deltec Asset Management LLC | 0.47% | 15K | $52,500 | +15,000 (0.0%) | June 30, 2026 |
| 15 | UBS Group AG | 0.42% | 14K | $47,478 | −13,936 (−50.7%) | June 30, 2026 |
| 16 | HRT FINANCIAL LLC | 0.40% | 13K | $44,492 | +12,712 (0.0%) | June 30, 2026 |
| 17 | Fiduciary Trust Co | 0.33% | 11K | $37,625 | — | June 30, 2026 |
| 18 | Morgan Stanley - Brokerage Accounts | 0.07% | 2,389 | $8,362 | −261 (−9.8%) | June 30, 2026 |
| 19 | Vanguard Global Advisers, LLC | 0.02% | 638 | $2,233 | — | June 30, 2026 |
| 20 | Barclays PLC | 0.01% | 212 | $742 | — | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 7 holders added 234K shares and 7 cut 151K.
PASG top mutual fund and ETF holders
14 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.45% | 79K | $275,674 | — | August 31, 2026 |
| 2 | Fidelity Extended Market Index | 0.53% | 17K | $59,616 | −92 (−0.5%) | August 31, 2026 |
| 3 | Abante Quant Value FI | 0.44% | 14K | $49,518 | — | August 31, 2026 |
| 4 | Fidelity Total Market Index | 0.20% | 6,427 | $22,494 | — | August 31, 2026 |
| 5 | Fidelity Series Total Market Index | 0.15% | 4,783 | $16,740 | — | August 31, 2026 |
| 6 | ERSTE STOCK BIOTEC EUR R01 A | 0.09% | 2,790 | $9,765 | — | August 31, 2026 |
| 7 | LVIP Dimensional US Core Equity 2 Std | 0.06% | 2,022 | $7,077 | +2,022 (0.0%) | June 30, 2026 |
| 8 | DFA US Core Equity Class F | 0.05% | 1,503 | $5,260 | — | July 31, 2026 |
| 9 | Fidelity Nasdaq Composite Index | 0.04% | 1,274 | $4,459 | — | August 31, 2026 |
| 10 | DFA US Vector Equity Class F | 0.04% | 1,220 | $4,270 | — | July 31, 2026 |
| 11 | BSF Systematic US Eq Abs Ret A2 USD | 0.03% | 1,004 | $3,514 | — | December 31, 2025 |
| 12 | Vanguard U.S. Eq Idx £ Acc | 0.02% | 638 | $2,233 | — | August 31, 2026 |
| 13 | BlackRock Diversified Equity Alpha Inst | 0.02% | 504 | $1,764 | — | July 31, 2026 |
| 14 | Guggenheim Active Allocation Fund | <0.01% | 22 | $77 | +11 (+100.0%) | May 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
PASG insider transactions
latest 10| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-01-08 | William Chou | Sell | $18.44 | 4,076 | $75,161 |
| 2025-09-15 | Lynx1 Capital Management Lp | Buy | $6.99 | 11,900 | $83,181 |
| 2025-09-12 | Lynx1 Capital Management Lp | Buy | $6.99 | 19,783 | $138,283 |
| 2025-09-11 | Lynx1 Capital Management Lp | Buy | $6.96 | 325 | $2,262 |
| 2025-07-24 | Lynx1 Capital Management Lp | Buy | $5.71 | 66,423 | $379,275 |
| 2025-07-23 | Lynx1 Capital Management Lp | Buy | $5.74 | 49,302 | $282,993 |
| 2025-07-22 | Lynx1 Capital Management Lp | Buy | $5.44 | 13,123 | $71,389 |
| 2025-06-26 | Orbimed Advisors Llc | Sell | $6.60 | 10,662 | $70,369 |
| 2025-06-25 | Orbimed Advisors Llc | Sell | $6.60 | 6,940 | $45,804 |
| 2025-06-24 | Orbimed Advisors Llc | Sell | $7.00 | 11,580 | $81,060 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
PASG shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns PASG
Institutional investors own 46.4% of Passage Bio's shares and insiders 7.71%. The largest holder is Lynx1 Capital Management, LP with 20.94% of the shares (674K), as of June 30, 2026. Among the top 20 institutions, 7 added shares and 7 reduced their stake in the latest filings. Short interest is 3.52% of the float, or 3.35 days of average trading volume. The share count rose 164.8% since 2018.
Related: PASG analyst forecast, PASG key metrics. See the PASG stock overview for the latest quote and news.
PASG ownership FAQ
Who owns the most Passage Bio stock?
The largest shareholders of Passage Bio are Lynx1 Capital Management, LP (20.94%), Vanguard Capital Management, LLC (3.54%), Balyasny Asset Management LLC (3.33%), Ikarian Capital, LLC (3.09%), Yiheng Capital LLC (2.68%).
What percentage of Passage Bio is owned by institutions?
Institutions hold 46.4% of Passage Bio's shares outstanding; insiders hold 7.71%.
Which funds own Passage Bio?
The largest fund holders of Passage Bio are Vanguard MStar Total Stk Mkt Idx Invest (2.45%), Fidelity Extended Market Index (0.53%), Abante Quant Value FI (0.44%), Fidelity Total Market Index (0.20%), Fidelity Series Total Market Index (0.15%).
What is Passage Bio's short interest?
91K shares of Passage Bio were sold short, 3.52% of the float; at the average daily volume it would take 3.35 days to cover.
Are insiders buying or selling Passage Bio?
Of the latest 10 reported insider transactions in Passage Bio (since June 24, 2025), 6 were purchases and 4 were sales.
How many shares of Passage Bio are outstanding?
Passage Bio has 3.2M shares outstanding, of which 3.2M are in the public float.